And the application is just hanging when I run it. (No error message.)
If, however, I hardcode the values instead of using parameters, it works just fine everytime.
UpdateCommand="UPDATE Custom_ContainerRequest_ESTWEIGHTS SET WEIGHTRANGES = 'test' WHERE ESTWEIGHTS_ID = 1"
So I don't know if it's a single-quote issue, or if there's some other syntax I need, or what. One last note is that this is a DB2 database I'm using. But I'm sure that my connection is valid because I can read and update data...only not using parameters.
Could someone please help me!!! I am using a multi-value parameter in SQL 2005 reports and am getting the following error message:
An error has occured during report processing. Qiery execution failed for dataset an expression of non-boolean type specified in a context where condition is expected, near ',' Incorrect syntax near keyword else.
The multi-value parameter works when it isn't run in the if, else clause i checked the where clause with a single paramter and it works OK. I don't understand what is causing this problem but I really need to fix it. Here is my query.
if @job_SubRep_ProjNo_param = '0'
Begin select Job_Job_No as job, Job_Job_Name as Job_title, cast(Job_Total_Fee as float) as fee, employee_first_name + ' ' + employee_surname as jl_name, cast(Job_Percent_Complete as float) as percentcomplete, cast(Job_Work_Done as float) as workdone, cast(Job_Invoicing as float) as job_Invoicing, job_WIP, Job_Expenditure as timecost, job_project_no, Job_Profit_Loss, cast(Job_Hours as float) as hours, job_expenses from job_tbl inner join project_tbl on job_project_no = project_no inner join employee_tbl on job_jl_empno = employee_no where project_pl_empno = @pl_employeeNo or job_jl_empno = @jl_subRep
end else select Job_Job_No as job, Job_Job_Name as Job_title, cast(Job_Total_Fee as float) as fee, employee_first_name + ' ' + employee_surname as jl_name, cast(Job_Percent_Complete as float) as percentcomplete, cast(Job_Work_Done as float) as workdone, cast(Job_Invoicing as float) as job_Invoicing, job_WIP, Job_Expenditure as timecost, job_project_no, Job_Profit_Loss, cast(Job_Hours as float) as hours, job_expenses from job_tbl inner join project_tbl on job_project_no = project_no inner join employee_tbl on job_jl_empno = employee_no where job_project_no in (@job_SubRep_ProjNo_param) or job_jl_empno = @jl_subRep
I know i can accomplish this by setting a session variable on page load on the server side (Session["UserName"]= User.Identity.Name) and then use a session parameter, but I was wondering how to do it without using session variables, i was hoping the following code would work, but it doesn't. Thanks for any ideas.
Hi, I have a question re sqldatasource syntax. I have the following code in the .vb file (I'm using VWD Express and VB): If slag = "a" Then Kptyp1HiddenField.Value = 40 Kptyp2HiddenField.Value = 50 End If If slag = "b" Then Kptyp1HiddenField.Value = 30 Kptyp2HiddenField.Value = 30 End If ...And in my .aspx file: <asp:DropDownList ID="KpnrDropDownList" runat="server" Style="z-index: 102; left: 640px; position: absolute; top: 120px" BackColor="WhiteSmoke" Width="256px" DataSourceID="kpSqlDataSource" DataTextField="kpnamn" DataValueField="kpnr"> </asp:DropDownList> <asp:SqlDataSource ID="kpSqlDataSource" runat="server" ConnectionString="<%$ ConnectionStrings:dbConnectionString %>" SelectCommand="SELECT [kpnr], CONVERT(varchar(4),[kpnr]) + ' (' + [kpnamn] + ')' As kpnamn FROM [kpstandard] WHERE (([kptyp] = @kptyp1) OR ([kptyp] = @kptyp2)) ORDER BY [kpnr]"> <SelectParameters> <asp:ControlParameter ControlID="Kptyp1HiddenField" DefaultValue="00" Name="kptyp1" PropertyName="Value" Type="Int16" /> <asp:ControlParameter ControlID="Kptyp2HiddenField" DefaultValue="90" Name="kptyp2" PropertyName="Value" Type="Int16" /> </SelectParameters> </asp:SqlDataSource> + two hidden fields. What I'd like to do is to get the two variables Kptyp1 and kptyp2 directly from the .vb file, either to the SELECT statement, or at least to the controlparameter code, instead of having to go through two hidden fields. How do I do this? Thanks in advance, Pettrer
Hi I need to create an sqlDataSource that filters a table based on the users ID – in other words, I have a table with a list of users, and when a logged in user loads the page, the results should only show records with their user name. How would I do this? Thanks for any help in advanceRichard
I am setting the SelectCommand of the SqlDataSource in my page_load. This is the WHERE part of my SelectCommand:WHERE ProductName LIKE '%' ? '%' OR ProductRef LIKE '%' ? '%'The above uses two select parameters. But the two select parameters will have the same value. So is it possible to re-write my select command so it just uses one parameter? I have tried the following, but this doesn't work. WHERE (ProductName OR ProductRef) LIKE '%' ? '%'Is there similar syntax I could use that works?
Hi, I need to UPDATE the IP Address of a newly created user into a table (the value is currently set to default - " Not Available"), and I really dont know the syntax required to do this. So far I've derived all the variables needed using the following code: protected void ContinueButton_Click(object sender, EventArgs e) { //Get the ip address and put it into the customer table - (the instance of this user now exists) MembershipUser _membershipUser = Membership.GetUser(); Guid UserId = (Guid)_membershipUser.ProviderUserKey;<--------------------------------------------------------------I can see the UserId here if I pause the prog SqlDataSource customerDataSource = new SqlDataSource(); customerDataSource.ConnectionString = ConfigurationManager.ConnectionStrings["ConnectionString"].ToString(); customerDataSource.UpdateParameters.Add("IPAddress", Request.UserHostAddress.ToString());<---------------------------------------I can see the IPAddress here customerDataSource.UpdateCommandType = SqlDataSourceCommandType.Text; what next I've not got a clue as to what to write next. There is a try / catch statement after this using : rowsAffected = customerDataSource.Update(); which remains at 0 no matter what I try. Any help greatly appreciated.
This is probably a simple question, but I have a form with two content windows. In content1 using an sqldatsource1 I select a single record and display it using a FormView. What I need to do is using one field from sqldatsource1 ("CategoryName", which is not displayed in formview1), in content window 2; I need to display all records with the same CategoryName. So the simple English version is: Using CategoryName from SqlDataSource1 (in content window 1), select all records in SqlDatasource2 where CategoryName is = CategoryName (in content window 2). I am using vb code behind. Thanks
I have a SqlDataSource, a GridView and a TextBox (whose ID is searchTB) on my page. I can use the SqlDataSource like this: <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="Data Source=TORNADO;Initial Catalog=AdventureWorks;Integrated Security=True" ProviderName="System.Data.SqlClient" SelectCommand="select * from production.product where name = @nameparam"> <SelectParameters> <asp:ControlParameter ControlID="searchTB" Name="nameparam" PropertyName="Text" /> </SelectParameters> </asp:SqlDataSource> However, I want the search to be made using the LIKE operator, ie, select * from production.product where name LIKE %THE_TEXT_FROM_TEXTBOX%. How can I do this? Thanks
Hi there, I'm still new, so please be patient with me... I am using C# ASP.NET 2.0. I have a web page that uses a Calendar control to display links for events from my database. The links use the __doPostBack to pass the EventID back to the same page. I was getting the EventID as a string okay and then passing it into a TextBox control. I then had an SqlDataSource control that set to display the Event in a DetailsView. The SqlDataSource uses a control to get the EventID - I used the TextBox control. It is all working fine, but... What I want to do is instead of using a TextBox control - pass the string in to a public property in the class in my code-behind. I want to use an <asp:Parameter> on my SqlDataSource control to set the control to get the EventID from my public property. How do I do this? Thanks in advance.
I have a gridview which is displaying a bunch of data. However, I'd only like to display data based on the query string. Here's my code: <asp:GridView ID="gv" runat="server" AllowPaging="True" AllowSorting="True" AutoGenerateColumns="False" CssClass="GridControl" DataKeyNames="ID"> <Columns> <asp:BoundField DataField="ID" HeaderText="ID" InsertVisible="False" ReadOnly="True" Visible="false" SortExpression="ID" /> <asp:HyperLinkField DataNavigateUrlFields="ID" DataNavigateUrlFormatString="Details.aspx?id={0}" Text="Details" /> <asp:BoundField DataField="Name" HeaderText="Attendee" SortExpression="Name" /> <asp:BoundField DataField="Email" HeaderText="Email" SortExpression="Email" /> </Columns> </asp:GridView> <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:conn %>" SelectCommand="sprocCUSTOM_GetDetail" SelectCommandType="StoredProcedure"> </asp:SqlDataSource>and my stored procedure: SELECT ID, Name, Email FROM Events WHERE (ID = @eventID) So as you can see, I need to get the value from the query string to add to my stored procedure. I know this can be done in the code-behind, but isn't there a way to add <SelectParameter> to the SqlDataSource? I just can't get the query string in there.
Hello all, This may be a simple question, but it is causing me some grief at the moment.I put a SqlDataSource control on my form, and pointed it to the stored procedures I had written to insert/update/delete rows in my database.The DataSource control notices that I am using parameters in my queries, and asks me to select where the parameters will be assigned from (Control, Form, Session, etc.)I am keeping the primary key value (in this case an ID number for a real estate listing) persisted in ViewState.Is there any way to access ViewState from the SqlDataSource control, or do I need to find another way to do this? Thanks,Adam
One of the requirements of the UpdateParameters for a GridView I'm building is that the fields that are being edited via EditItemTemplates are passed back to the UpdateParameter as XML. How would I go about combining the fields from the GridView/EditItems into an XML string that I can set as an asp:Parameter? Thanks.
I'm trying to pass my SqlDataSource a parameter that is defined in the code-behind file for the same page. I've tried the method below but it does not work. Is there a better way?SubmitForm.ascx page: <asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$ connection string...... %>" SelectCommand="sp_CourseMaterialShipment_GetCourses" SelectCommandType="StoredProcedure"> <SelectParameters> <asp:Parameter DefaultValue="<% ProgramID %>" Name="programID" Type="Int32" /> </SelectParameters></asp:SqlDataSource> SubmitForm.ascx.vb page:Private ProgramID as string = "25"Public ReadOnly Property ProgramID() As String Get Return _ProgramID End GetEnd Property ThanksJason
In the SqlDataSource control if I go to the SelectQuery property and I set one parameter with the “direction� property to “Output� the result doesn’t display in the control, why?
Points: The procedure witch is in the selectquery property the parameter in it is set to output two.
I need to know how to setup the ControlParameter for a template control in my Gridview? I have a datepicker in my template and I need to know how to refer to it in the ControlParameter of the SQLDataSource control. <UpdateParameters> <asp:ControlParameter Name="dp_start" ControlID="bdpPlanStart" PropertyName="SelectedValue" Type="Datetime" /> Here is the template:<asp:TemplateField HeaderText="Start" SortExpression="dp_start"> <ItemTemplate> <%#DataBinder.Eval(Container, "DataItem.dp_start", "{0:d}")%> </ItemTemplate> <EditItemTemplate> <BDP:BasicDatePicker id="bdpPlanStart" SelectedValue='<%# DataBinder.Eval(Container.DataItem,"dp_start") %>' runat="server" DateFormat="d"> </BDP:BasicDatePicker> </EditItemTemplate> </asp:TemplateField>
I have a table with with some column name includes a space. for example [Product ID] [Product Name] Instead of Product_ID, Product_Name. when I try to create a gridview and enable delete, insert. It just won't work. I've been trying for several hours without success. When I click on delete. the page postback without any error, but the record doesn't get deleted or updated. <asp:SqlDataSource id="sourceProducts" runat="server" SelectCommand="SELECT [Product ID], [Product Name] FROM Products" ConnectionString="<%$ ConnectionStrings:mydb %>"DeleteCommand="Delete from Products where [Product ID]=@ProductIDUpdateCommand="UPDATE Products SET [Product Name]=@ProductName WHERE [Product ID]=@ProductID" > <UpdateParameters> <asp:Parameter Name="ProductName" /> <asp:Parameter Name="ProductID" /> </UpdateParameters> <DeleteParameters> <asp:Parameter Name="ProductID" Type="Int32"/> </DeleteParameters></asp:SqlDataSource><asp:GridView ID="GridView2" runat="server" DataSourceID="sourceProducts" AutoGenerateColumns="False" DataKeyNames="Product ID" > <Columns> <asp:BoundField DataField="Product ID" HeaderText="ID" ReadOnly="True" /> <asp:BoundField DataField="Product Name" HeaderText="Product Name"/> <asp:CommandField ShowEditButton="True" ShowDeleteButton="True"></asp:GridView> Another testing I did was to use another table with no space in the Column name, Product_ID, Product_Name. and I can't name my parameter as PID, PNAME. I have to name it as @Product_ID, @Product_Name in order for Delete, update to work. My understanding is if I declare the parameter explicitly(<asp:Parameter Name="PID" />, I can use any name I want. Did I must missed something? I'm new to ASP.NET, could someone help me? Thanks.
I'm sure that is really simple, but how do I pass a parameter with multiple value to a SQLdatasource? ex: SELECT field1 from tblTableA where idTableA IN ( @Param1) Let's say I want to pass 1,2,3,4 as Param1 (SELECT field1 from tblTableA where idTableA IN ( 1,2,3,4)) How I am supposed tu use the .SelectParameters.Add() to pass a list of integers instead of a single value?? Thanks in advance.
Is it possible to use a WHERE-IN statement with a SqlDataSource control. For instance: <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:myConnectionString %>" SelectCommand="SELECT [Id], [Name], [Phone] FROM [Table1] WHERE ([Id] IN @Id)"> <SelectParameters> <asp:Parameter DefaultValue="( 1, 3, 5, 7, 11 )" Name="Id" Type="Int32" /> </SelectParameters></asp:SqlDataSource> I'm hoping the gridview would then display a table with rows for records 1,3,5,7,11. Thanks for any help...
Hi there,I'm new to db stuffs and I'm using sqldatasource to pull my data from the server. Here's the codes.<asp:SqlDataSource ID="testSqlDataSource" runat="server" ConnectionString="<%$ ConnectionStrings:p01impConnectionString %>" SelectCommand="SELECT [a], [b], [c], [d], [e] FROM [MYDB] WHERE (([a] = @a) AND ([b= @b))" CancelSelectOnNullParameter="False"> <SelectParameters> <asp:ControlParameter ControlID="TextBox1" Name="a" PropertyName="Text" Type="String" /> <asp:ControlParameter ControlID="TextBox2" Name="b" PropertyName="Text" Type="String" /> </SelectParameters></asp:SqlDataSource> notice that I haven't used [c], [d], [e] and I want to declare a parameter, something like: Total = c + (d*e)can anyone show me the syntax to do this UNDER sqldatasource? I then will have to put that Total in a gridview (i can solve this part)Thanks
Problem: The system throws the following error"Procedure or Function 'sp_TestRequestFormMaster_StatusChange' expects parameter '@Status', which was not supplied."I'm using VS 2005 Final.Recreate the problem:I've created a simple stored procedure with two parameters on SQL 2005 on Win 2003 Server. @ID INT, & @Stutus INTOn a SQLDataSource Control for the Delete query, using the build button to open the Command and Parameter Editor, I click the Refresh Paramater.I set ID Parameter Source: Control, ControlID: GridView1I set Status Parameter Source: None, DefaultValue: 1001.Partial Source View: <DeleteParameters><asp:ControlParameter ControlID="GridView1" Name="ID" propertyName="SelectedValue" Type="Int32" DefaultValue="" /> <asp:Parameter DefaultValue="1001" Name="Status" Type="Int32" /><asp:Parameter DefaultValue="" Direction="ReturnValue" Name="RETURN_VALUE" Type="Int32" /></DeleteParameters>I run the code, click the delete in the GridView and the error appears. How can I pass a status value without relating it to a source.
Hi, I am using a SQL DataSource with a few parameters. I need to specify the value of the parameters at run time but I need a custom way to do it as the value needs to be calculated not come from Cookie, Control, Form, Profile, QueryString or Session. Is there a way to bind your own value to these parameters. For instance if I had a variable how would I bind that to the parameter? At the moment i am doing the following which works but I dont think it is the correct way dsMyDataSource.SelectParameters["MyParameter"].DefaultValue = MyCalculatedValue; In previous projects i have added a value to the Session and then bound the parameter value to the session but that doesnt seem like a good solution either. Thanks for any help you can give. Martin
Wahts the right way to specify a parameter in an Execute SQL Task when the param is a varchar? should I use apostrophe's around the ? or not?
I have two SQL tasks .. one where the query is specified like :
WHERE FIA.BaseCurrency = ?
Which SSIS likes and doesn't complain about...(the but then I have another query.. [below].. which SSIS complains about unless I have apostrophes around the ?
So its like:
AND FIA.BaseCurrency = '?'
So.. which should it be?
The problem for me here is that when I DO put the apostrophes around the ? I get no results back from the query...
PJ
The problem query:
SELECT ForeignCurrency, RateFromFile AS YesterdaysRate --The ISNULL just protects us from situation where a rate is not found, -- which could occur if the last loaded rates file was missing the rate for the -- foreign currency we are checking. FROM inputrates IR
WHERE fileheaderid in ( -- this gives the ID's last set of rates loaded on -- whatever was the previous day (ie on a monday the previous load day was friday)
SELECT top 1 MAX(ID) FROM FileInputAttempts FIA WHERE Source = '?' AND FIA.BaseCurrency = '?' AND status = 'SUCCESS'
AND CAST(FLOOR(CAST(LoadDate AS float))AS datetime) <= CAST(FLOOR(CAST(Dateadd(day,-1,getdate()) AS float))AS datetime) Group by CAST(FLOOR(CAST(LoadDate AS float))AS datetime) order by MAX(loaddate) DESC )
Hi, I have a little problem with a SqlDataSource. A table in my database has an ID collumn, which is an integer auto-increment. The datasource has a SelectQuery with an [ID] parameter, which it retrieves from the querystring. I want the DataSource to return all rows when no querystring parameter is passed, and when an ID is given via the querystring, a 'WHERE' clause in the SelectQuery would return only certain records. However, suppose I have the following query: SELECT * FROM SomeTable WHERE ([ID] = @ID) When I bind @ID to the QueryString with '*' as DefaultValue, it throws an exception saying it can't convert '*' to a smallint, which makes sense. I haven't got a clue how to solve this, except for using different DataSources based on the presence of the querystring parameter. Any idea's?
Hello, I just started working with ASP.NET.I'm trying to use the CheckBoxList Control. As I understand it, you can bind a SqlDataSource to this control and it loads the list for you. However tp precheck the items, you have to do this manually. This part works fine. Next part was to save whatever the user checks. I wrote stored Procedure and now just trying to pass 1 parameter to the stored procedure using a second SqlDataSource. I get the error: "A severe error occurred on the current command. The results, if any, should be discarded."Here is the second datasource I am using to try and save the data:<asp:SqlDataSource ID="sds_PersonRole" runat="server" ConnectionString="<%$ ConnectionStrings:Development %>"SelectCommand="usp_selectPersonRole"SelectCommandType="StoredProcedure"UpdateCommand="usp_updatePersonRole"UpdateCommandType="StoredProcedure"><SelectParameters> <asp:ControlParameter ControlID="gv_Person" Name="PERSON_ID" PropertyName="SelectedValue" Type="Int32" /></SelectParameters><UpdateParameters> <asp:Parameter Name="strXML" Size="8000" Type="String" /> <asp:Parameter Direction="InputOutput" Name="err_msg" Type="String" Size="150" DefaultValue="0" /></UpdateParameters></asp:SqlDataSource>I have a code behind file with the following modules: (btnEditPerson is clicked to start the process. the sds_PersonDetails is updated via form contolls and works fine.) Error occurs on the bolded line (Stored procedure is just accepting the string and saving to a field. It works fine, I tested it. Its just erroring out before it runs the stored procedure. Protected Sub btnEditPerson_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnEditPerson.Click sds_PersonDetails.Update() gv_Person.DataBind() sds_PersonRole.Update()End Sub Protected Sub sds_PersonRole_Updating(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.SqlDataSourceCommandEventArgs) Handles sds_PersonRole.Updating Dim command As Data.Common.DbCommand command = e.Command 'un-check all checkboxlist items (count - 1 to account for starting at 0) Dim listCount As Integer = cbl_Role.Items.Count() - 1 Dim strXML As String strXML = "<personRole>" For x As Integer = 0 To listCount If cbl_Role.Items(x).Selected() = False Then strXML = strXML & "<person id='" & gv_Person.SelectedValue & "' />" strXML = strXML & "<role id='" & cbl_Role.Items(x).Value & "' />" End If Next strXML = strXML & "</personRole>" command.Parameters("@strXML").Value = strXML lbl_ErrMsg.Text = command.Parameters("@err_msg").Value.ToString() End Sub
I am not sure (and I've been known to overlook things) if it is possible to use a Table parameter type as parameter to a stored procedure? Is it possible? I would prefer not to create a SQL batch statement calling an stored proc w/ one parameter over and over. Instead i'd rather just create the stored proc to take a table parameter and pass the table into the stored proc. I know I could use a CSV string of IDs instead of a table... or I could create a big SQL batch and use that. But I'd rather not. Could anyone provide some guidance? Thanks!Joe
I have looked and tried with no luck on using the Profile.UserName in an SQLDataSource Update select statement. and anyone please help me with this?UpdateCommand="UPDATE tblDocuments SET DocumentTypeID = @DocumentTypeID, DocDescription = @DocDescription, DocLocation = @DocLocation, DocStartDate = @DocStartDate, DocEndDate = @DocEndDate, LastUpdate = GETDATE(), LastUpdateBy = @ProfileUser WHERE (DocumentID = @DocumentID)" <UpdateParameters> <asp:Parameter Name="DocumentID" /> <asp:Parameter Name="DocumentTypeID" /> <asp:Parameter Name="DocDescription" /> <asp:Parameter Name="DocLocation" /> <asp:Parameter Name="DocStartDate" /> <asp:Parameter Name="DocEndDate" /> <asp:Parameter Name="ClientID" /> <asp:Parameter Name="ProfileUser" /> </UpdateParameters>
SelectCommand="SELECT * FROM Table1 WHERE Field1 IN @target"
And my parameter looks like this:
<asp:ControlParameter Name="target" ControlID="CheckBoxList1" PropertyName="SelectedValue" /> This code gives me a syntax error near @target. Someone got a solution?
i created a cookie as follows HttpCookie myCookie = new HttpCookie("Portal"); myCookie["EMail_ID"] = Email_ID;myCookie["Role"] = Role_ID.Value.ToString();myCookie.Expires = DateTime.Now.AddMinutes(1); Response.Cookies.Add(myCookie);
Now i have to take the"EMail_ID" as input parameter in sqldatasourse.
Why does this not work? <asp:SqlDataSource ID="employeeSource" runat="server" ConnectionString="<%$ ConnectionStrings:mainDB %>" DataSourceMode="DataReader" ProviderName="System.Data.SqlClient" OnSelecting="OnSourceSelecting" SelectCommand="SELECT * FROM Employees WHERE ID = @employeeID"> <SelectParameters> <asp:Parameter Name="@employeeID" Type="Int32" /> </SelectParameters> </asp:SqlDataSource>In code behind: protected void OnSourceSelecting(object sender, SqlDataSourceCommandEventArgs args) { // THIS LINE THROWS EXCEPTION: An SqlParameter with ParameterName '@campaignID' is not contained by this SqlParameterCollection. args.Command.Parameters["@employeeID"].Value = 3; // In future, will use dynamic value. } If, instead I do this: <asp:SqlDataSource ID="employeeSource" runat="server" ConnectionString="<%$ ConnectionStrings:mainDB %>" DataSourceMode="DataReader" ProviderName="System.Data.SqlClient" OnSelecting="OnSourceSelecting" SelectCommand="SELECT * FROM Employees WHERE ID = @employeeID"> <SelectParameters> <asp:QueryStringParameter Name="@campaignID" QueryStringField="id" /> </SelectParameters> </asp:SqlDataSource>(Of course I call page with EmployeePage.aspx?id=123)I get the exception: Must declare the scalar variable "@employeeID".
Hi, I'm having some issues with the SqlDataSource. I want to use it to populate a GridView, but using an optional parameter to filter the results.
This is what I have right now (hopefully haven't made any typos - can't copy/paste):
<asp:SqlDataSource ID="test1" runat="server" SelectCommand="SELECT * FROM SomeTable WHERE (@MyParam IS NULL OR MyColumn = @MyParam) ORDER BY SomeColumn" ConnectionString="<% ConnectionStrings:MyConnString %>" > <SelectParameters>
When I test the SQL query in the query designer it works (returns only rows having the value passed as a parameter when one is specified, otherwise it returns all rows), so it seems like that part is OK. The "All" (as in "return all"/no filtering) entry in the DropDownList has a value of a zero lenght string, and the ControlParameter has the convert empty string to null to true (and the default value is the same), so it should get converted to a null when "All" is selected, hence returning all rows. But it doesn't work. It works fine for all the entries with text, but the zero lenght string somehow doesn't work - I get no results at all instead of it returning all rows (but the query itself worked fine when I tested it).
What am I missing? I just can't find what I'm doing wrong. Any ideas/hints? (I also need to do the same with an ObjectDataSource, so hopefully I can get this to work!) I can't think of an easy way to find out if the zero lenght string gets converted to a null or not (I've even tried adding OR @MyParam = '' to the query and it still didn't work....) Right now I'm stuck....
(Also posted this question on microsoft.public.dotnet.framework.adonet newsgroup)
